The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 23, 1988
Filed:
Sep. 23, 1986
Noriyuki Hayano, Machida, JP;
Yoshimi Kawato, Ibaraki, JP;
Tatushi Arishige, Sagamihara, JP;
Hideaki Tamai, Saitama, JP;
Shizuo Mine, Katsuta, JP;
Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo, JP;
Abstract
A nitrate solution which is a substance to be treated is heated and denitrated using microwaves, by introducing the substance directly into a cylindrical oven to which microwaves are applied, horizontally rotating the oven about a vertical axis, detecting the amount of reflected waves of the applied microwaves with time to observe the heating condition of the substance, and controlling microwave power to be applied according to the detected amount of the reflected waves and the change in the amount of reflected waves with time. The cylindrical oven preferably has a construction capable of being separated into a stationary upper part and a horizontally rotatable lower part constituting a closed-bottom vessel. These two parts are combined through a choke coupling mechanism to form the oven. According to the detected values of the reflected waves, the precise control of the microwave power applied to the substance to be treated can be conducted at a suitable time.